Apple has officially released IOS13, but it has not been officially pushed. IOS13 is under test. Some consumers have updated IOS13 public beta through other methods.
After upgrading IOS 13 public beta system, I found that the return bar at the bottom of the screen could not be used normally, which has something to do with the screen of mobile phones, especially those models above iPhone X. This happens after upgrading the system.
If you accidentally update IOS 13 public beta system, there are ways to solve this problem. As long as you lower it to IOS12.4 system, this problem can be solved. Therefore, you don’t need to worry.
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